What is the Least Common Multiple of 4970 and 4990?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 4970 and 4990 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4970 and 4990, than apply into the LCM equation.

GCF(4970,4990) = 10
LCM(4970,4990) = ( 4970 × 4990) / 10
LCM(4970,4990) = 24800300 / 10
LCM(4970,4990) = 2480030

Least Common Multiple (LCM) of 4970 and 4990 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4970 and 4990. First we will calculate the prime factors of 4970 and 4990.

Prime Factorization of 4970

Prime Factorization of 4990

Now multiplying the highest exponent prime factors to calculate the LCM of 4970 and 4990.

LCM(4970,4990) = 2¹ × 5¹ × 7¹ × 71¹ × 499¹
LCM(4970,4990) = 2480030